That which hath been born of the flesh, is flesh. σάρξ is not the physical as opposed to the spiritual or immaterial. nor is σάρξ necessarily sinful, as we see from John 1:14, but as it often appears in John's writing and Paul's, σάρξ is the constituent element of humanity as apart from grace—humanity (body, intellect, heart, conscience, soul, spirit) viewed on its own side and merits and capacity, without the Divine life, or the Divine supernatural inbreathing. The being born of the flesh is the being born into this world, with all the privations and depravations, evil tendencies and passions of a fallen humanity. Birth into the theocracy, birth into national or ecclesiastical privilege, birth that has no higher quality than flesh, no better germ or graft upon it. simply produces flesh, humanity over again. When the Logos "became flesh," something more than and different from ordinary traduction of humanity took place.£
Destitute of any higher birth than the birth of flesh, man is fleshly, psychical, earthly, σαρκικός ψυχικός χοΐκός (Romans 7:14-25), and, more than that, positively opposed to the will and grace of God, lashed with passions, defiled with debasing ideas, in enmity against God. Hence the birth "from the Spirit" is entirely antithetic to the birth from the flesh. That which hath been born of the Spirit, is spirit. There is a birth which supervenes on the flesh-be-gotten man, and it is supernaturally wrought by the Spirit of God. As in the first instance, at man's creation, God breathed into man the breath of life, and by that operation man became a living soul; so now the new birth of man is wrought in him by the Spirit, and there is a new life, a new mode of being, a new bias and predomimating impulse. "A spiritual mind which is life and peace" has taken the place of the old carnal mind. He is "spiritual," no longer "psychical," or "carnal," but able to discern the things that are freely given to him. The eye of the spirit is opened, unsealed, the τὰ τοῦ πνεύματος are revealed to him (1 Corinthians 2:12-16; 1 Corinthians 3:1-5). The reference to "birth of water" is not repeated, because the birth from water is relatively unimportant, and of no value apart from the Spirit-change of which it may be a picture, or even a synonym. More than that, the Spirit-birth, the Divine operation, is the efficient cause of that which, under the form of a human experience, is called μετάνοια. The human metanoia, rather than the new birth, is the great burden of our Lord's public address, as recorded in the synoptic Gospels. In both representations the same fact, the same condition and state of the human consciousness, is referred to. In "repentance," however, and in the moral characters which are the several preliminaries to the beatitudes of the Sermon on the Mount, a change is declared necessary for the constitution and inauguration of the kingdom of heaven. This change is there viewed from the standpoint of human experience, and urged in the form of a direct appeal to conscience. In this discourse to Nicodcmus the same change is exhibited on its Divine side, and as one produced by the Spirit of God. In the Sermon on the Mount "meekness," "poverty of spirit," "mourning," "hunger after righteousness," "purity of heart," the spirit of forgiveness and long suffering, are the moral conditions of those minds and hearts which would become the city of God and the light of the world (Matthew 5:1-12). On this occasion, when addressing the learned rabbi, Christ sums all up in the demand for a birth from the Spirit—a new and spiritual recommencement of life from the Spirit of God. The clause found in the vetus Itala and the Syriac, quia Deus spiritus est, et de Deo natus est, is a gloss sustained by no Greek manuscript authority. Thorns here quotes two interesting passages from Philo, 1:533, 599, where the νοῦς is spoken of as given to man from above, and where the supremacy of the spiritual over the fleshly is made the only guarantee of admission into the world of spirit. But Philo obviously meant the intellectual rather than the moral element in human nature, and prized the ascetic process rather than the supernatural regeneration.